Question

What are
device drivers ? What
What is their
significance ?​

Answer 1

Answer:

A driver provides a software interface to hardware devices, enabling operating systems and other computer programs to access hardware functions without needing to know precise details about the hardware being used. ... Drivers are hardware dependent and operating-system-specific.

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Answer 2

Answer:

A device driver is a computer program that operates or controls a particular type of device that is attached to a computer. Drivers are hardware dependent and operating-system-specific. They usually provide the interrupt handling required for any necessary asynchronous time-dependent hardware interface. Device drivers works within the kernel layer of the operating system.

Actual differences are encapsulated in kernel modules called device drivers that internally are custom tailored to each device.

The purpose of device driver layer is to hide the differences among device controller from the I/O subsystem of the kernel.

I/O system calls encapsulate the behavior of devices in a few generic classes that hide hardware differences from applications.